Padlock.



PATEN TED MAR. 15., 1904.

J. B. MILLER.

PADLOGK.

APPLICATION mm In 18,1903.

H0 MODEL.

M awl A TTORNE )4 INVENTOR.

J B MILLER.

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I No. 754,479.

Patented March 15, 1904.

PATENT OFFICE.

JOSEPH B. MILLER, OF KANSAS CITY, MISSOURI.

PADLOCK- srncrrrcarron forming part of Letters Patent No. 754,479, dated March 15, 1904.

Application filed May 18, 1903.

ings, forming a part thereof, is sufiiciently clear and concise as to enable others skilled in the art to which it appertains to make and use the same. I e

In this invention my object, broadly speaking, is the provision of an improved padlock which will be neat, artistic, and attractive in appearance, compact and symmetrical in pro-' portions, strong and durable in construction, positive in action, and capable of 'a wide scope of usefulness and efliciency,

Another object is the provision of' a padlock especially adapted for use in connection with mail-bags or the like composed of cooperating interdependent and subsidiary elements arranged and combined to subserve the highest economic ends.

A further object isthe provision of a padlock for mail-bags which will be easily operated and maintained, will be simple in character, and which can be manufactured and sold at a comparatively low price.

Other objects and advantages will appear from the drawings and from the following specification and correlated in the claims hereunto appended.

My invention consists in a padlock embodying certain new and useful features and details of construction and relative disposition of the several elements substantially as particularly described elsewhere in this specification and in the legitimate combinations herein set forth and embodied in the claims.

For a more thorough understanding of my invention I will now proceed to take up the description of my invention in detail, which I will state as briefly and compactly as I may.

One manner of carrying-out the invention, and that which in practice has been found most desirable, is illustrated in the accompanying drawings, in which Figure 1 is a front elevation of my lock.

Serial No. 157,698. (No model.)

Fig. 2 is a side elevation of same. Fig. 3 is a rear elevation of same. Fig. 4 is an interior view of the body ofmy lock; Fig. 5 is an inside face view ofthe plate covering the interior mechanism. Fig. 6 is a perspective detail of a portion of the interior mechanism. Fig. 7 is a cross-sectional view taken on the lines X X of Figs. 1, 2, and 3; Fig. 8, detail rear view .main disk, a front view of same being shown in the lower portion of Fig. 6; and Fig. 9 is a detail rear perspective view of the escutcheon-disk and the cam'integral thereof.

Similar indicesrefer to and denote similar parts throughout the several views.

Referring now to the drawings in detail, the numeral 1 represents a hollow casing, with rivets 2 extending through its interior, by which the plate is secured. 3 represents the plate of same contour as the casing, with holes 4 in its outer edges to receive the outer ends of the rivets 2. Extending up from one corner of the casing 1 and the plate 3 are cars 5 and 6, respectively, with corresponding holes therethrough to receive the shaft 7, on which shaft is mounted the bow 8, andin the opposite corner of the upper endof the casing 1 is formed an aperture of a size to allow the free end of the bow 8 to enter the interior of the casing, as shown in Fig. {in Near the point ofthe bow 8 is formed a slot to receive the end of the bolt 9 for the purpose of locking the bow therein. The bolt 9 is of a width to fit the space in the casing 1, of a length the same as the distance between the inner edge of the point of the bow and the right side of the space in the casing, and its thickness is the same as said slot in the point of the bow, said'bolt being adapted to move back and forth laterally in contact with the upper end of the casing 1, as indicated in Fig. 4. In the rear'or under edge of the bolt 9 is a notch 10, one of its sides being beveled, as shown in Fig. 6. Immediately back of the bolt through the body of the casing 1 is a small hole toloosely receive the pin 11, said pin 11 being secured atits inner end to the upper end of the spring 12, Fig. 4, and the lower end of the spring 12 is secured to the inside of the casing 1, as shown in Fig.

4:. The upper point of the spring 12 and the inner end of the pin 11 rest in the notch when the bolt 9 is to the rightthat is, when the bow is released by the bolt. When the bolt9 is moved to the left and the bow locked, the upper end of the spring 12 will be forced down against the casing, and consequently the outer end of the pin 11 will be forced outward the same distance through the opening in the casing 1, in which it operates, for the purpose which will hereinafter appear. In the bolt 9 is a small slot to receive the upper end of the arm 13. Extending from the inside of the casing 1 through its interior and into the plate 3 is' a pivot 14, on which the lower end of the arm 13 is mounted, as shown in Fig. 4. Extending to the right from the lower end of the arm 13 and integral therewith is a finger 15, with its outer end slotted to receive the upper end of the bar 16, pivoted therein by the rivet -17.- Secured to the lower portion of the arm 13 is a flat spring 18, which extends downward, and its lower portion contacts with one of the rivets 2, as in Fig. 4,. by which the upper end of' the arm 13 is normally'pressed to the left by the resilience of said spring 18. Extending centrally from the interior of the casing 1, through the interior thereof, is a which is a slot 22, Fig. 6, cut axially in the periphery of the disk 20, in which slot is pivotally mounted the lower end of the bar 16 by the rivet 23. Secured to the left wall of the interiorof the casing 1 is a flat spring 24, its outer or right-hand end carrying a lug 25, whichis adapted to enter the notch 21 when the upper end'ofthe arm 13 is to the left, as in Fig. 4. r

Through the plate 3, central of the shaft 19, of same size as the disks, is a round opening, over which on the outside of the plate 3 is secured the escutcheon 26, with a keyhole 27 therethrough. The numeral 28 represents the escutcheon-disk of same thickness as the plate 3' and of a size to freely revolve in said opening andincontact with the inner face of the escutcheon. Secured to the inner face of the disk-28 is a cam 29 of substantially the contour sho wnin Fig. 9. Through the disk 28 and the cam 29 is a keyhole of same size as and corresponding with the keyhole in the escutcheon.

The cam 29 is adapted to contact with. the lug 25 and to throw it out of engagement with .the notch 21 when the disk 28 is turned to the right. In the face of the disk 20 opposite the notch 21 and near the outer edge of the disk is secured ahalf-round pin 30, and in the inner face of the disk 28, adjoining one side of the cam, is a pin 31. The pin 31 is arranged to In the periphery of the engage the pin 30 when the disk 28 is turned to the right. Through the disk 20 is a hole near the notch 21, in which operates a pin, said pin being secured to one end of the flat spring 33, which spring contacts with the under side of the disk 20, the other end of the spring 33 being secured to the disk 20 by the rivet 34. The point of the pin 32 is kept normally above the surface of the disk by its spring 33. The left-hand side of the end of the pin 32 is beveled, as indicated in Fig. 6. Said pin 32 is normally opposite the lower portion of the keyhole 27, and when the key is inserted the key of necessity engages the outer end of said pin, and before the key may be turned it must be pressed inward until the outer end of said pin is flush with the face of the disk 20, thus causing the lock to be more difiicult to be opened by one unfamiliar with its operation. Then in turning the key for its removal the projection thereof will engage the bevel side of the pin 32, pressing the pin in flush with the face of the disk 20. The key can then be brought into alinement with the hole 27, and then by reason of the resiliency of the spring 33 the pin 32 will tend to force the key out of the hole 27.

Integral of the cam 29 and rising from the face thereof around the shaft 19 is a central boss, (shown in Fig. 9,) and in the disk 20 opposite said boss is a central depression (shown in Fig. 6) of a size to neatly receive said boss, by which arrangement it is apparent that when the face of the cam 29 is contacted with the face of the disk 20 each may be rotated independently of the other; yet at the same time they will be locked in alinement with each other without danger of accidental displacement.

On the inner face of the plate 3 is a pivot 35, Fig. 5, on which is pivoted the arm 36, with an upturned projection on its free end adapted to contact with the point of the bow 8 when it is in the casing. A curved flat spring 37 is secured to the base of the arm 36 and then curves under and rests on the permanent pin 38 to normally keep the point of the arm 36 against the lug 39, which latter is secured to the plate 3, as shown in Fig. 5.

Integral of and extending out from theback with the casing 1 are guides 40, forming a bifurcated channel opening at the upper end to receive a card or slip A. Extending down from the lower end of the casing 1 is a bail or staple 41, to which is secured the chain 42, the other end of the chain being secured to the key 43, as shown. In order that the key may not be separated inadvertently from the lock until the lock is in actual use, when required for actual use the key should be removed, and the end of the chain to which it was attached should be secured to a mail-bag or the like on which the lock is to be used, and the key should be placed in possession of the person authorized to open the look.

It will now be apparent that when the device is unlocked the pin 11 will be down level with the outside of the casing in order that the card Amay be mounted between the guides 40 in the position shown, and when the device -is locked the pin 11 will be forced outward in order that the card A may not be removed out of the notch 21. The shoulder 29 will then engage the pin 30,and the disk 20 will then be turned, carrying the bar 16 and causing the arm 13 to move the bolt 9, disengaging its point from the notch in the how 8, thus allowing the point of the arm 36 to throw the bow forcibly back on its pivot. The point of the arm 36 will thus be in the path of the bolt 9 and prevent it from returning across the opening for the point of the bow. Desiring to lock the bow, the point of the bow is inserted in its opening in the casing,pressing back the point of the arm 36 and allowing the point of the bolt 9 to engage the notch of the bow in the manner shown.

From the above it will be apparent that mylock while simple in construction and operation is positive in action, reducing to a minimum the chances of its being unlocked by persons not provided with the proper key, and by reason of the above, together with the means provided for attaching a destinationtag thereto, is especially adapted for use on mail-pouches, in which case it would be advisable to have the key carried by the authorized mail clerk and the outer end of the chain secured to some permanent portion of the mail-pouch in order that the lock may not become parted therefrom.

From the above description, taken in connection with the accompanying drawings, it will be seen that I have produced an improved padlock embodying the objects elsewhere referred to in this specification.

While I have illustrated and described the best means now known to me for carrying out the objects of my invention, I-desire it to be understood that I do not restrict myself to the exact details of construction shown and described, but hold that any slight changes or variations in such details as would suggest themselves to the ordinary mechanic would clearly fall within the limit and scope of my invention. a

The terms in, out, right, left, and other similar terms are used for convenience of description only, and it is not intended by'the use of such terms to limit the arrangement and operation of the several parts to the relative positions indicated.

Having now fully shown my invention,, what I claim as new, and desire to secure by Letters Patent of the United States, is

1. In a padlock, the combination with the casing and aplate inclosing the interior thereof, of a bow hinged to the casing, a bolt for securing the bow in a locked position,a springactuated arm for opening the bow and for holding back the bolt until the point of the bow is again entered in the casing, disks operated by a key for drawing back the bolt, guides formed on the outside of the casing for holding a destination-tag, and means for connecting the lock to another object by a chain, all substantially as shown and described.

2. In a padlock, the combination of a casing with a securing-bow pivoted thereto; a bolt adapted to move for securing the end of the bow; a pin operative through a hole in the case, for retaining the destination-tag, and actuated by said bolt; a disk within the casing operative by a key; a cam secured to said disk; a second disk located below the first disk; a permanent shaft on which said disks are revolubly mounted; a bar pivoted in the periphery of the second disk; a finger and an arm integral with and at right angles to each other; a pivot to which said arm and finger are mounted at their union, the upper end of said arm being mounted in a slot in saidbolt and the outer end of said finger being pivoted to said bar; a spring-actuated lug to engage in a notch in the periphery of the second disk; a pin in the face of the second disk; ashoulder in the periphery of said cam to engage said pin in the face of the second disk; and a pin in the under face of the first disk to engage said pin in the second disk; all substantially as shown and described.

In testimony whereof I have hereunto signed my name to this specification in the presence 0 two subscribing witnesses.

JOSEPH B. MILLER.

Witnesses:

THOMAS P. KEYES, J. R. VVooDswoR'rH. 

